Pre- and post-planned evaluation: Which is preferable?
نویسندگان
چکیده
منابع مشابه
Pre- and Post-planned Evaluation: Which Is Preferable?
This paper compares the advantages and disadvantages o f the "pre-planned" and "postplanned" approaches to evaluating program effectiveness. These evaluative approaches are compared along a number o f dimensions which include: (a) Reliability o f data and the cost o f collecting it; (b) Internal validity; (c) External validity; (d) Evaluation obtrusiveness and threat; and (e) Program goal displ...
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ژورنال
عنوان ژورنال: Evaluation and Program Planning
سال: 1978
ISSN: 0149-7189
DOI: 10.1016/0149-7189(78)90071-x